src/charts/types/area-chart.js
import Chart from '../chart'
import InvalidGrammarError from '../../errors/invalid-grammar-error'
/**
* Represents an Area Chart.
*/
export default class AreaChart extends Chart {
/**
* Creates an instance of the AreaChart class
* @param {string} data - JSON string containing the data columns.
*/
constructor(data) {
super(data)
}
/**
* Alter the parameters of the chart using the provided grammar.
* @param {string} grammar - Simple grammar string describing the chart.
* @returns {boolean} - Returns true if the grammar is parsed.
*/
do(grammar) {
if (!super.do(grammar)) {
if (grammar.match(new RegExp('where [0-9a-zA-Z\\-]+ as area-spline'))) {
let areaSplineDataLabel = grammar.match(new RegExp('where [0-9a-zA-Z\\-]+ as area-spline'))[0].split(' ')[1]
this._outputJson.data.types[areaSplineDataLabel] = 'area-spline'
return true
} else if (grammar.match(new RegExp('where [0-9a-zA-Z\\-]+ as area'))) {
let areaDataLabel = grammar.match(new RegExp('where [0-9a-zA-Z\\-]+ as area'))[0].split(' ')[1]
this._outputJson.data.types[areaDataLabel] = 'area'
return true
} else {
throw new InvalidGrammarError()
}
}
}
}